Slip-resistant footwear tread



FIG. 1 is a perspective view of a slip-resistant footwear tread showing my new design;

FIG. 2 is a plan view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a front elevation view thereof; and,

FIG. 6 is a rear elevation view thereof.

The broken lines shown in the drawings are for environmental purposes only and form no part of the claimed design. 

The ornamental design for a slip-resistant footwear tread, as shown and described. 